Disclaimer
Please read before using this calculator
Important Notice
This Tax Code Checker is provided by Montrogue Tax Advisors for general guidance and informational purposes only. It is an indicative tool and does not constitute tax, legal or professional advice, nor does it create an advisor-client relationship.
Indicative Result Only
The checker interprets common UK PAYE tax codes (including L, M, N, T and K codes, emergency W1/M1/X suffixes, Scottish S and Welsh C prefixes, and the BR, D0, D1, NT and 0T codes) for the 2025/26 tax year, and applies indicative 2025/26 income tax bands where you provide an income figure. It does not capture every HMRC adjustment, company benefit, student loan, pension, Scottish/Welsh sub-bands, or the £100,000 Personal Allowance taper beyond what your code already reflects. The result should not be relied upon as a definitive calculation of your tax.
No Professional Advice
Each tax situation is unique. You should not rely on this calculator as a substitute for professional advice. We strongly recommend that you obtain professional tax advice before making any decisions or filings based on the outcome shown.
Limitation of Liability
Montrogue Tax Advisors and its professionals shall not be liable for any loss, damage, or claims arising from the use of this calculator, including any direct, indirect, incidental, consequential, or punitive damages, even if advised of the possibility of such damage.
Professional Consultation
For a definitive review of your tax code and how it applies to your circumstances, please book a consultation with one of our Chartered Tax Advisors. We’re here to provide professional guidance tailored to your individual circumstances.
Your Email & Consent (GDPR)
To use this calculator we ask for your email address. We use it to send you a copy of your results and to follow up and ask whether you would like help or a consultation. By entering your email and clicking ‘Accept & Continue’ you consent to Montrogue Tax Advisors storing your email address and the results you generate, and contacting you about your calculation, in accordance with our Privacy Policy and the UK GDPR. You can ask us to stop contacting you or to delete your data at any time by emailing info@montrogue.co.uk.
By using this calculator, you acknowledge that you have read and understood this disclaimer.